I am trying to get angular velocity from accelerometer. I can get G values and degrees of object on 3d space.

Can I convert g values somehow to angular velocity?

I was thinking taking differentiation of angular displacement but I dont know whether it will be accurate or not.


Using RCF = 1.118 x Radius x (rpm/1000)\$^2\$ you can convert between g force (relative centrifugal force) and RPM for a certain "off-centre" distance (in millimetres): -

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Or use this calculator or the following table: -

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Once you have obtained RPM you can calculate the speed of rotation at that radius (angular velocity).

It's not a very electronicky subject on the face of it but I've used it for determining if some crystals can be used when rotated.

  • \$\begingroup\$ I think you meant centripetal force. Centrifugal is a fictional force like ether :) \$\endgroup\$ – efox29 Dec 15 '15 at 15:09
  • \$\begingroup\$ @efox29 No, I believe I do mean centrifugal force: sorbio.com/index.php/rpm-vs-rcf \$\endgroup\$ – Andy aka Dec 15 '15 at 15:11
  • \$\begingroup\$ Centripetal force is that force that tethers an object at a certain radius when spun thus counteracting the outwards throwing centrifugal force. I guess it's roundabout the same thing! \$\endgroup\$ – Andy aka Dec 15 '15 at 15:19

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